Vortex
SPORT CANTILEVER 30MM RING – ABSOLUTE CO-WITNESS
Item # VORT CM-305 MSRP $76.99PRODUCT DETAILS
TECH SPECS:
The Vortex CM-305 mounts your 30?mm red dot with precision—offering absolute co-witness alignment at 37mm height, paired with a forward 1″ cantilever to clear BUIS and magnifiers. Ideal for AR-style rifles running StrikeFire or VMX-3T setups, this rugged ring ensures a tight, zero-retaining fit for tactical or carry use.
Key Features
-
Absolute Co-Witness Height: Maintains full iron sight visibility through the red dot—centerline sits at ~37mm above the rail.
-
1″ Forward Offset: Clears rear BUIS and magnifiers for optimized optic placement.
-
Full Rail Compatibility: Attaches securely to Picatinny and Weaver rails—built for flat-top AR platforms.
-
Durable Aluminum Build: Machined from 6061-T6 with matte-black hard-coat anodizing for rugged lifetime use.
-
Tool-Assisted Installation: Includes Torx T-15 wrench. Base screws torque between 35–45in-lbs; cap screws 15–18in-lbs.
-
Lightweight Design: Weighs approximately 6.7oz, adding minimal bulk while maintaining robust stability.
-
Lifetime Warranty: Fully backed by Vortex’s VIP Unconditional Lifetime Warranty—zero hassle, no registration.
| Feature | Specification |
|---|---|
| Manufacturer | Vortex Optics |
| Model Number | CM-305 |
| Mount Type | Cantilever Ring |
| Tube Diameter Compatibility | 30?mm |
| Mount Height | ~1.46" (37mm Absolute Co-Witness) |
| Forward Offset | Approx. 1 inch |
| Rail Compatibility | Picatinny / Weaver |
| Material | 6061-T6 Aluminum |
| Finish | Matte Black Hard-Coat Anodized |
| Weight | Approx. 6.7?oz |
| Torque Specs | Base: 35–45in-lbs; Caps: 15–18in-lbs (Torx T-15) |
| Includes | Torx T-15 wrench |
| Warranty | Vortex VIP Lifetime Warranty |
Questions 0
Ask a QuestionProven Arms & Outfitters A bolt-action rifle requires the shooter to manually operate a bolt to load a round, eject the spent casing, and chamber the next round. In contrast, a semi-automatic rifle is designed to automatically eject the spent casing and chamber a new round with each pull of the trigger. Semi-automatic rifles offer faster follow-up shots, while bolt-action rifles are typically more accurate due to their design.
SORT BY MOST RECENT
No Customer Review on this product
PRODUCT DETAILS
TECH SPECS:
The Vortex CM-305 mounts your 30?mm red dot with precision—offering absolute co-witness alignment at 37mm height, paired with a forward 1″ cantilever to clear BUIS and magnifiers. Ideal for AR-style rifles running StrikeFire or VMX-3T setups, this rugged ring ensures a tight, zero-retaining fit for tactical or carry use.
Key Features
-
Absolute Co-Witness Height: Maintains full iron sight visibility through the red dot—centerline sits at ~37mm above the rail.
-
1″ Forward Offset: Clears rear BUIS and magnifiers for optimized optic placement.
-
Full Rail Compatibility: Attaches securely to Picatinny and Weaver rails—built for flat-top AR platforms.
-
Durable Aluminum Build: Machined from 6061-T6 with matte-black hard-coat anodizing for rugged lifetime use.
-
Tool-Assisted Installation: Includes Torx T-15 wrench. Base screws torque between 35–45in-lbs; cap screws 15–18in-lbs.
-
Lightweight Design: Weighs approximately 6.7oz, adding minimal bulk while maintaining robust stability.
-
Lifetime Warranty: Fully backed by Vortex’s VIP Unconditional Lifetime Warranty—zero hassle, no registration.
| Feature | Specification |
|---|---|
| Manufacturer | Vortex Optics |
| Model Number | CM-305 |
| Mount Type | Cantilever Ring |
| Tube Diameter Compatibility | 30?mm |
| Mount Height | ~1.46" (37mm Absolute Co-Witness) |
| Forward Offset | Approx. 1 inch |
| Rail Compatibility | Picatinny / Weaver |
| Material | 6061-T6 Aluminum |
| Finish | Matte Black Hard-Coat Anodized |
| Weight | Approx. 6.7?oz |
| Torque Specs | Base: 35–45in-lbs; Caps: 15–18in-lbs (Torx T-15) |
| Includes | Torx T-15 wrench |
| Warranty | Vortex VIP Lifetime Warranty |
SORT BY MOST RECENT
No Customer Review on this product
Questions 0
Ask a QuestionProven Arms & Outfitters A bolt-action rifle requires the shooter to manually operate a bolt to load a round, eject the spent casing, and chamber the next round. In contrast, a semi-automatic rifle is designed to automatically eject the spent casing and chamber a new round with each pull of the trigger. Semi-automatic rifles offer faster follow-up shots, while bolt-action rifles are typically more accurate due to their design.
